What is the mol fraction na2so4
What is the mol fraction Na2SO4 in a solution which is 11.5% by weight Na2SO4 (molar mass Na2SO4 = 142.06 g/mol and H2O = 18.016 g/mol)?
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In an ore-mixing operation, a bucket full of ore is suspended from a traveling crane which moves along a stationary bridge. The bucket is to swing no more than 4 m horizontally when the crane is brought to a sudden stop.
A + B unstable helix (fast, k1 and k-1) Unstable helix stable double helix (slow, k2). write pre-equilbrium and steady-sate approximation.
Magnesium hydroxide is 54.87% oxygen by mass. How many grams of oxygen are in 175g of the compound? how many moles of oxygen is this.
Describing the tribe's history after contact, including major events and armed conflicts that may have been important to the history of the tribe in the present day.
A 2.89 g sample of solid calcium carbide (CaC2) reacted with water to produce acetylene gas (C2H2) and aqueous calcium hydroxide. If the acetylene was collected over water at 16.3 C and 0.973 atm, how much acetylene was produced? Answer in units o
What is the percent yield of a reaction in which 262 g phosphorus trichloride reacts with excess water to form 102 g HCl and aqueous phosphorus acid (H3PO3)?
When a 5.00 g sample of NaOH dissolves in 100.0 g of water in a "coffee cup" calorimeter, the temperature rises from 28.3 degrees C to 39.6 degrees C. Calculate the heat energy for the reaction of 5.00 g of NaOH AND the heat of solution (reaction)
The heat of formation of liquid aluminum, Al (l) is about 10.7 kJ/mol. The entropy of solid aluminum is 28 J/mol K and the entropy of liquid aluminum is 40 J/mol K. Based on these data, at what temperature (oC) should aluminum melt?
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